Motor-operated card and picture display apparatus.



P. J. SCHELLER.

MOTOR OPERATED CARD AND PICTURE DISPLAY APPARATUS.

APPLICATION FILED DEC- l8, I915.

Lwfl m W1. Patented Dec. 12,1916.

2 SHEETS-SHEET I.

a W SW wilt meow W $2313 J/WMI? W WWW/1g ms mwms PEYERS p0,. Puma-1mm. WASNINGYDN. 01 c4 P. J. SCHELLER.

MOTOR OPERATED CARD AND PICTURE DISPLAY APPARATUS.

APPLICATION FILED DEC- is, 1915- L flfifilllfio Patented Dec. 12, 1916.

2 SHEtETS-SHEET 2.

Hlh

mt: Noun-s mavens m. PNONLITNQ. WA snnvarcufn IINITEU @TATlEd PATENT UFFIDE,

PAUL J. SCHELLER, OF EVANSVILLE, INDIANA, ASSIGNOR TO THE SLIDE-O-GBAPH COMPANY, OF EVANSVILLE, INDIANA, A' CORPORATION'OF INDIANA.

MOTOR-OPERATED CARD AND PICTURE DISPLAY APPARATUS.

Application filed December 18, 1915.

To all whom it may concern Be it known that I, PAUL J. SGHELLER, a citizen of the United States, residing at Evansville, county of Vanderburg, and State of Indiana, have invented certain new and useful Improvements in Motor- Operated Card and Picture Display Apparatus, of which the following is a specification.

This invention relates to motor-operated card and picture display apparatus.

The object of the present invention is to provide improvements on the electric motor-operated card and picture display apparatus of my application, Serial No. 18,013, filed March 30, 1915, to the end that the construction will be simplified, improved, greater regularity of the step-by-step movement of the chain of slide carriers will be obtained and all wabbling or shaking thereof obviated, thus insuring greater perfection in the display of the pictures carried by the slide.

With the foregoing ends in view, the invention consists, first, of an improved combined reflector and guide adapted to 006perate with the idle stretch of the chain of slide carriers to prevent it from wabbling or shaking and also to serve as a reflector for the illuminating device used to project the pictures on the other stretch of the chain of slide carriers; second, in an improved construction of chain and slide carriers, whereby the chain or carrier is rendered light, easily flexed when passing around the drums or wheels, and made adaptable to being guided and to conform to the drums as well as permitting the easy insertion and removal of the slides and the proper tension thereof; third, in an improved form of drum or reel.

The embodiments of the invention which are set forth hereinafter and shown in the accompanying drawings are to be considered as illustrative, rather than restrictive, of the scope of the invention inasmuch as my improvements are susceptible of modification.

In the accompanying drawings, Figure 1 is a front perspective; Fig. 2, a rear elevation with the door open; Fig. 3, a vertical section through the case, the operative parts being in full and in dotted lines; Fig. 4:, a detail of a portion of the slide carrier; Fig.

Specification of Letters Patent.

Patented Dec. 12, 191%.

Serial No. 67,664.

5, a cross section on line 55, Fig. 1; Fig. 6, a cross section through one of the drums; Fig. 7 a detail face view of one of the links of the slide carrier; Fig. 8, a side View thereof; Fig. 9, a detail of a modification by which the lower drum may be dispensed with; and Fig. 10, a detail of another modification showing rollers which may be substituted for the guide for the rear stretch of the slide carriers.

The apparatus is preferably contained within a cabinet or box-like structure 1 which has a platform 2 intermediate its upper and lower ends for the support above or. below said platform of the motor 3 and the operating means a, the latter being substantially the same as set forth in my application Serial No. 18,013, and operating in the same manner except that it is arranged to drive the shaft 5 of the upper reel or drum 6 instead of the shaft 7 of the lower drum or reel 8, and the ratchet wheel 9 on the shaft 5 has eight teeth instead of six, as the drums 6 and 8 are octagonal instead of hexagonal, as in my said application. As the motor 3 and driving means A constitute no part of the present invention,.it is unnecessary to give a detailed explanation thereof. The electric motor 8 imparts a rocking movement to the lever P, which causes the pawl 41 to turn the ratchet wheel 9 step by step, allowing a suitable pause or dwell of the picture in between the turnings of the ratchet wheel 9 so that the pictures remain projected or displayed for a suflicient time for them to be observed.

The reels or drums 6 and 8 are shown in Fig. 6. These drums are preferably of sheet metal having sides or heads 10 provided with slightly outstanding flange sections 11 corresponding in number to the eight sides 12 of the drum. The parts 11 may be integral with the heads 10 or eight separate pieces secured or riveted thereto. The body of the drum may be of sheet metal and secured to the ends 10 in any suitable manner.

The slide carrier has two chains 13 and 14 composed of ointed, flat links, as shown in Figs. l, 5, 7 and 8. Each link 15 is provided at one end with a central hinge member 16 and at the other end with two hinge members 17. Short rivets 18 constitute the pivots for the hinge members 16 of one link and the members 17 of another link. The links are of a length adapting them to properly fit the sides 12 of the drums so that the pivots 18 will lie at the angles where the sides of the drummeet.

The slide holders 19 constitute the cross connection between the chains 13 and 14. Each slide holder is of open and rectangular form, being provided with overhanging lips 20 at its top and bottom and flanges 21 at its sides. The slideholders are riveted to the links of the chains 13 and 14, as at22. The slides n3 can be readily slipped over the flange 21 and under the lips and thereupon the lips and the flanges 21will retain them, subject to ready removal for the substitution of others when desired.

The front stretch of the chain of slide carriers passes through the exposure or slidereceiving box or house 24:, from which projects a telescopic focusing tube 25 containing the lenses for the projection of the picture. 7

The light, such as a small electric are or incandescent light 26 is suitably arranged back of the slide-receiving box or house 24 for the purpose of illuminating and projecting the picture slide which is in the box or house 2 1. To serve as a reflector for the light and also as a guide for the rear stretch V of the chain of slide carriers, I provide a vertically arranged elongated plate 27 which, on its face 28 nearest the light 26, may be highly polished, colored white, silvered, or otherwise adapted to serve as a reflecting back-ground for the light 26 and also to completely obscure the series of slides constituting the back stretch of the chain so that the full effect of the rays from the light 26 Will be had'on the slide which is in the box 24 and thus clearness'of projection is obtained. On its rear face, the plate 27 may be provided with a pair of vertically arranged guide flanges 29 and 30 adapted to easily, yet snugly, engage the chains 13 and 14: and guide the rear stretch of the slide carrier as it moves along, step by step,

7 and thus prevent any shaking, wabbling or displacement thereof which would interfere With the accurate and regular advance of the chain of slides and the projection of the slides, one at a time.

In card and picture exhibitors of the stepby-step, motor-operated type, there is considerable shaking and vibration due to the operation of the mechanical movement which brings about the step-by-step advance I and arrest of the chain of slide carriers. My comblned reflector and guide minimizes shaking, 'Wabbling or displacement of the chain of slide carriers, due to this cause.

In Fig. 9, I have shown a detail of a modification of the slide-receiving box or house 24 wherein a roller 31 extends cross- Wise in said box and bears against the chain of slide carriers and holds the slide carrier in the box against the rear wall. thereof and also prevents swaying or wabbling of the front stretch of the chain of slide carriers. W hen the roller 31 is employed, the drum 8 may be dispensed with, if desired, and the lower portion of the chain of slide carriers will then simply hang free. If preferred, the drum 8 can be used when the roller 31 is provided.

In Fig. 10, I have shown a modification by which the guide plate 27 and its flanges 29 and 30 may be dispensed with and for the purpose of holding the rear stretch of the chain of slide carriers from shaking or wabbling, there will be provided rods 32 fixed to the sides of the case 1 and provided with flanges 33. Loosely mounted on the rods are rollers 34: which are limited in their longitudinal movement by the flanges 33 and bear against the rear stretch of the chain of slide carriers.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a slide exhibiting apparatus, the combination with a chain of slide holders, of a projecting device before which the chain of slide holders is adapted to pass, a source of light for the projection of the pictures, and a combined reflector and guide serving as a reflector for the source of light and a guiding device for the chain of slide holders.

2. In a slide exhibiting apparatus, the combination with an endless chain of slide holders, of a projecting device before which one stretch of the chain of slide holders is adapted to pass, a source of light for the projection of the pictures, and a combined reflector and guide serving as a reflecting back-ground for said source of light and as a guide for the remaining stretch of slide holders.

7 3. In a slide exhibiting apparatus, the combination with an endless chain of slide holders, of a projecting device before which one stretch of the chain of slide holders is adapted to pass, a source of light for the projection of the pictures, a reflecting plate disposed at the back of the source of light and serving as a reflector therefor, and provided with flanges between which the remaining stretch of the chain of slide holders is adapted to pass, said slide holders being adapted to pass over the face of said plate.

4. In a slide exhibiting apparatus, the combination with upper and lower reels or drums, of an endless chain of slide holders adapted to run over said reels or drums, a projecting device for displaying the matter carried by the slide holders and having means for guiding the front stretch of said endless chain of slide holders, and guiding means, independent of said drums, adapted to directly cooperate with, and guide, the

having lips to engage the slides, and retaining means for the slides.

7. In a slide exhibiting apparatus, a slide carrier comprising articulated flat links and slide holders secured thereto and constituting bridging and bracing means for the respective pairs of links, said slide holders being of open rectangular form and having over-hanging lips on tWo of their sides and retaining flanges on the other sides.

In testimony whereof, I hereunto afiix my signature.

PAUL J. SCHELLER.

Copies of this patent may be obtained for five cents each, by addressing the "Gommissioner of Eatents, Washington, D. 0. 

